USB

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The USB interface of the the WebUSB API provides attributes and methods for finding and connecting USB devices from a web page.

Properties

None.

Event handlers

USB.onconnect
An event handler called whenever a previously paired device is connected.
USB.ondisconnect
An event handler called whenever a paired device is disconnected.

Methods

USB.getDevices()
Returns a Promise that resolves with an array of USBDevice objects for paired attached devices.
USB.requestDevice()
Returns a Promise that resolves with an instance of USBDevice if the specified device is found. Calling this function triggers the user agent's pairing flow.

Specifications

Specification Status Comment
WebUSB
The definition of 'USB' in that specification.
Draft Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support61 No No No48 No
onconnect61 No No No48 No
ondisconnect61 No No No48 No
getDevices61 No No No48 No
requestDevice61 No No No48 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No61 No No48 No No
onconnect No61 No No48 No No
ondisconnect No61 No No48 No No
getDevices No61 No No48 No No
requestDevice No61 No No48 No No

Document Tags and Contributors

Contributors to this page: jpmedley
Last updated by: jpmedley,